Home / Accessory-Silencer Accessories / Gemtech PISTON GM-45 LID 9/16-24 View cart “SilencerCo O-RING BOOSTER PACK” has been added to your cart. Gemtech PISTON GM-45 LID 9/16-24$14800 Out of stock SKU: 12187 Category: Accessory-Silencer Accessories Product ID: 31204 Description Description GM-45/Blackside Piston Related products Sale! Dead Air Armament HUB DIRECT THRD MNT M18X1.5 AI $8900 $8351 Sale! Dead Air Armament WOLVERINE INSERT 15MM RH HK $8900 $7865 Sale! SilencerCo 3-LUG MUZZLE DEVICE 9MM 5/8X24 $8900 $8211 SilencerCo DELTA 1/2X28 THREAD SPACER $1900